Psalms 37:31

The law of his God [is] in his heart; none of his steps shall slide.

Ver. 31. The law of his God is in his heart] He hath a Bible in his head and another in his heart; he hath a good treasure within, and there hence bringeth good things; he speaketh not by rote, and as a bungler, or as a philosopher only; but by proof, and as one that can say, I believed, I have felt it, and therefore have I spoken.

None of his steps shall slide] How should they, when they walk so exactly, and by such a rule? Jeremiah holding to it, durst say, Lord, if I am deceived, thou hast deceived me.